Endianness determines the order of how the multiple bytes of information are stored in the memory.
Big-endian is a byte ordering scheme in which the most significant byte also called the big end of data is stored at the the lowest address.
First byte is the biggest so Big-endian order puts most significant byte first and least significant byte in the last.
For example: A hexadecimal number 1D23 required two bytes to be represented so in big endian order this hexadecimal number will be represented as 1D 23.
